Caution if you plan to accept the Mac-Forums offer for Tune Up. I installed versions 2.4.2 & 2.4.6 on an iMac 10.7.5 and got a significant number of incorrect metadata. When asked to install version 3.0.2 I did so but the program ran for over a week and never finished cataloging iTunes. TuneUp's Support response to me was to uninstall it because it was buggy. I took their advice.